#include <stdio.h>
int main () {
	int arr [10];
	int num = 0;
	for (num = 0; num <= 9; num++) {
		arr[num] = num;
	}
	for (num = 0; num <= 9; num++){
		printf("%d",arr[num]);
	}
	printf("\n");
	return 0;
}
